Don't know if I'm using this right, but
You can almost guarantee that Canada's Wonderland will be teasing "Ziz" for their 2016 attraction. My money's on a B&M launched of some sort. Wing seems like the most obvious one.
A launched wing coaster could not be a very big project.
The problem with a launched wing coaster is that the trains need to be shortened to be light enough for the launch (see Holiday World) and with CW's attendance, I really doubt CF would want to limit capacity like that. If it is going to be a launched coaster, I would expect it to be a sit-down or floorless train.
While you're completely right about shorter trains, what about smaller five car trains but instead of three, having like six. Cedar Fair did this with Maverick and Top Thrill Dragster. Also, dual stations could be used to increase capacity even more.
Then they would waste time on locking in. But they would need either several brake runs or a very long brake run at the end for all those trains.